CN110993306B - Preparation method and preparation system of magnetic iron core - Google Patents
Preparation method and preparation system of magnetic iron core Download PDFInfo
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- CN110993306B CN110993306B CN201911292140.XA CN201911292140A CN110993306B CN 110993306 B CN110993306 B CN 110993306B CN 201911292140 A CN201911292140 A CN 201911292140A CN 110993306 B CN110993306 B CN 110993306B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 239000011248 coating agent Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 238000005238 degreasing Methods 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 10
- 238000007598 dipping method Methods 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 150000001412 amines Chemical group 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- -1 glycidyl amines Chemical class 0.000 claims description 2
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 18
- 239000011265 semifinished product Substances 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 150000004982 aromatic amines Chemical group 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- ABEXMJLMICYACI-UHFFFAOYSA-N [V].[Co].[Fe] Chemical compound [V].[Co].[Fe] ABEXMJLMICYACI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a preparation method and a preparation system of a magnetic iron core, wherein the preparation method comprises the following steps: taking a steel strip with required length and width, carrying out deburring treatment and degreasing treatment on the steel strip, rinsing and drying to obtain the steel strip to be coated; preparing a coating material, coating and drying a steel strip to be coated to obtain a coated steel strip; rolling and molding the coated steel strip, and fixing two ends of the rolled and molded coated steel strip to obtain a first semi-finished magnetic iron core; performing magnetic property treatment on the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core; bonding the second semi-finished magnetic iron core by using an impregnating material to obtain a third semi-finished magnetic iron core; and cutting the third semi-finished magnetic iron core, and correcting and peeling the size of the third semi-finished magnetic iron core to obtain a finished magnetic iron core. The magnetic iron core is light in weight and small in size, saves the size and the weight of aerospace products, and reduces energy consumption required by aircrafts.
Description
Technical Field
The invention belongs to the field of magnetic iron core manufacturing, and particularly relates to a preparation method and a preparation system of a magnetic iron core.
Background
Along with the requirements of national defense safety and construction, the research and development units in the field of weaponry continuously release novel advanced weaponry, and put higher requirements on matched electromagnetic components, and developed countries carry out technical blockade and forbidden sale on China in the aspect of relevant electromagnetic materials (components).
The iron-cobalt-vanadium soft magnetic alloy 1J22 magnetic iron core with high saturation magnetic induction intensity belongs to a novel electromagnetic element in China, and the surface of a 1J22 strip commonly used in China has no insulating coating; the material and the magnetic device manufactured by the material are extremely sensitive to stress, so that the iron core is difficult to manufacture, and the prior domestic mature production and processing technology of the iron core magnetic device is not available, so that the material cannot meet the market demand of the localization of military products.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a method and a system for manufacturing a magnetic core. The technical problem to be solved by the invention is realized by the following technical scheme:
a method for manufacturing a magnetic iron core comprises the following steps:
step 1: taking a steel strip with required length and width, carrying out deburring treatment and degreasing treatment on the steel strip, rinsing and drying to obtain the steel strip to be coated;
step 2: preparing a coating material, coating the steel strip to be coated and drying to obtain a coated steel strip;
and step 3: rolling and forming the coated steel strip, and fixing two ends of the rolled and formed coated steel strip to obtain a first semi-finished magnetic iron core;
and 4, step 4: performing magnetic property treatment on the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core;
and 5: bonding the second semi-finished magnetic iron core by using an impregnating material to obtain a third semi-finished magnetic iron core;
step 6: and cutting the third semi-finished magnetic iron core, and correcting and peeling the size of the third semi-finished magnetic iron core to obtain a finished magnetic iron core.
In one embodiment of the present invention, the coating material is a water-soluble inorganic insulating paint.
In one embodiment of the present invention, the step 4 comprises:
and (3) carrying out magnetic property treatment on the first semi-finished magnetic iron core in a hydrogen atmosphere with the purity of 99.999% at the temperature of 800-900 ℃, preserving heat for 3-6 h, and cooling to obtain a second semi-finished iron core.
In one embodiment of the present invention, the step 6 comprises:
step 61: carrying out centering slitting on the third semi-finished magnetic iron core;
step 62: grinding the cut surface of the cut third semi-finished magnetic iron core;
and step 63: and grinding the ground cutting surface, and then correcting and peeling the size of the third semi-finished magnetic iron core to obtain the finished magnetic iron core.
In one embodiment of the invention, the impregnating compound is a two-component epoxy resin.
Another embodiment of the present invention further provides a system for manufacturing a magnetic core according to any one of the above embodiments, including:
the blanking device is used for cutting the steel strip raw material to obtain a steel strip to be coated of the steel strip with the required length and width;
the coating device is used for coating and drying the steel strip to be coated to obtain a coated steel strip;
the iron core rolling device is used for rolling and molding the coated steel strip to obtain a first semi-finished magnetic iron core;
the magnetic property processing device is used for carrying out magnetic property processing on the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core;
the dipping and bonding device is used for carrying out dipping and bonding on the second semi-finished magnetic iron core to obtain a third semi-finished magnetic iron core;
and the cutting checking device is used for cutting the third semi-finished magnetic iron core and checking the size of the third semi-finished magnetic iron core to obtain a finished magnetic iron core.
In one embodiment of the present invention, the coating apparatus includes: the device comprises a feeding mechanism, a coating mechanism, a drying mechanism and a material receiving structure; wherein,
the feeding mechanism is used for collecting the steel strip to be coated and supplying the steel strip to be coated to the coating mechanism;
the coating mechanism comprises two rollers and a coating pool, wherein a coating material is filled in the coating pool, the steel strip to be coated is clamped between the two rollers, and continuous coating is carried out through continuous rotation of the rollers;
the drying mechanism is used for drying the coated steel strip to obtain a coated steel strip;
the receiving mechanism is used for collecting the coated steel strip.
The invention has the beneficial effects that:
1. the steel strip adopted by the magnetic iron core has very high saturation magnetic induction intensity, and is lighter and smaller than the traditional silicon steel iron core, so that the volume and the weight of aerospace products using the iron core are saved, and the energy consumption required by aircrafts is reduced;
2. the thickness of the coating layer on the surface of the steel strip can be adjusted through the gap between the two rollers, so that the product is ensured to have good insulating property and effective magnetic conduction area;
3. the coating layer of the magnetic iron core has strong adhesive force, so that the magnetic iron core is ensured to have reliable insulating property;
4. the magnetic iron core obtained by the process has higher electromagnetic performance parameters, so that the alternating current magnetic performance of the product can meet the performance requirements of the product.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a block configuration diagram of a system for manufacturing a magnetic core in an embodiment;
FIG. 2 is a schematic view of the construction of the coating apparatus;
fig. 3 is a schematic diagram of an external structure of an SD type 1J22 magnetic core before being cut;
fig. 4 is a schematic diagram of the contour structure of the CD-type 1J22 magnetic core before cutting.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1, an embodiment of the present invention provides a system for manufacturing a magnetic core, where the system is suitable for manufacturing CD-type and SD-type cores, and specifically includes: the device comprises a blanking device 1, a coating device 2, an iron core rolling device 3, a magnetic property processing device 4, a dipping and bonding device 5 and a cutting and checking device 6; wherein,
the blanking device 1 is a rolling shear machine with the model number of C8008 and is used for cutting a steel strip raw material to obtain a steel strip to be coated, wherein the steel strip is of the required length and width;
the coating device 2 is used for coating and drying the steel strip to be coated to obtain a coated steel strip;
the iron core rolling device 3 is a winder with the model of TXJ-1 and is used for rolling and forming the coated steel strip to obtain a first semi-finished magnetic iron core;
the magnetic property processing device 4 is an atmosphere furnace with the model of KSX-16-14Q and is used for processing the magnetic property of the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core;
the dipping and bonding device 5 comprises a vacuum dipping pot and an oven, and the diameter of the vacuum dipping pot is 550 mm; the model of the oven is HS-881-4; the dipping and bonding device 5 is used for dipping, bonding and drying the second semi-finished magnetic iron core to obtain a third semi-finished magnetic iron core;
the cutting checking device 6 comprises a linear cutting machine and a three-phase digital electrical parameter measuring instrument, wherein the model of the linear cutting machine is DK 7725; the three-phase digital electrical parameter measuring instrument is 8920, the cutting and checking device 6 is used for cutting the third semi-finished magnetic iron core, checking the size of the third semi-finished magnetic iron core, and checking the alternating current electromagnetic performance of the third semi-finished magnetic iron core by using the three-phase digital electrical parameter measuring instrument to obtain the finished magnetic iron core.
Further, referring to fig. 2, the coating apparatus 2 specifically includes: a feeding mechanism 21, a coating mechanism 22, a drying mechanism 23 and a material receiving mechanism 24; wherein,
the supply mechanism 21 is a first turntable for collecting the steel strip to be coated and supplying the steel strip to be coated to the coating mechanism.
The coating mechanism 22 comprises a driving roller 221, a driven roller 222 and a coating pool 223, wherein the coating pool 223 is filled with coating materials, the driving roller 221 and the driven roller 222 are positioned in the coating liquid and driven by a motor 224, the steel strip to be coated is pulled out from the feeding mechanism 21, clamped between the driving roller 221 and the driven roller 222, and the thickness of the coating layer is adjusted by adjusting the gap between the driving roller 221 and the driven roller 222; the driving roller 221 and the driven roller 222 are both rubber rollers; the coating mechanism 22 is arranged on the support, the feeding mechanism 21 is fixed on the support through a support rod, and the support is fixed on the drying mechanism 23.
The drying mechanism 23 is a tunnel oven, a tunnel curing oven for LYRL-FDL electronic products, and is used for drying and curing the coated steel strip to obtain the coated steel strip.
The take-up mechanism 24 is a second turntable for collecting the resulting coated strip, which may also be done manually.
Moreover, the steel strip is led out from the feeding mechanism 21, sequentially passes through the coating mechanism 22 and the drying mechanism 23, and then is wound on the material receiving mechanism 24, and the whole working process is continuously carried out.
Example 2
The embodiment of the invention takes a 1J22 steel belt as an example, and also provides a preparation method of an SD type 1J22 magnetic iron core, which specifically comprises the following steps:
step 1: according to the thickness and the width of the SD type iron core, taking a steel strip with the corresponding length and width, carrying out deburring treatment and degreasing treatment on the steel strip, rinsing and airing to obtain the 1J22 steel strip to be coated.
Specifically, a rolling shear is adopted to roll, shear and blank a 1J22 steel strip, the thickness of the 1J22 steel strip is 0.1mm, and the chemical components are shown in table 1:
After blanking is finished, burrs on the rolling-sheared surface of the 1J22 steel strip are removed by a deburring machine, then the 1J22 steel strip is subjected to degreasing treatment by an ultrasonic cleaning machine, and is rinsed by warm boiled water and dried to obtain the 1J22 steel strip to be coated.
Step 2: preparing a coating material, coating the 1J22 steel strip to be coated, and drying to obtain the 1J22 coated steel strip.
Further, step 2 specifically includes the following steps:
step 21: coating materials are prepared, and a 1J22 steel strip to be coated is coated by a coating device 2.
The coating material is a water-soluble inorganic insulating coating, such as a ZS-1091 water-soluble ceramic insulating coating, and can ensure that 1J22 has good adhesion and insulating property after the steel strip to be coated is coated.
Further, the thickness of the coating layer is between 0.005mm and 0.01mm, the thickness of the coating layer and the insulation of the 1J22 steel belt can be ensured by adjusting the gap between the two rubber rollers, and the coating process can be repeated for multiple times.
Step 22: and drying the coated 1J22 steel strip to be coated to obtain the 1J22 coated steel strip.
1J22 steel band to be coated is dried by a tunnel furnace after being coated, the drying temperature is 200 ℃, the drying time can be set according to actual conditions, and the thickness and uniformity of a coating layer can be effectively controlled by adopting a coating process of continuously drying after rolling the steel band by using rollers, so that the obtained SD type 1J22 magnetic iron core has a higher filling coefficient.
And step 3: and (3) rolling and forming the 1J22 coated steel strip, and fixing two ends of the rolled and formed 1J22 coated steel strip to obtain a first semi-finished SD type 1J22 magnetic iron core.
Specifically, an iron core is coiled by using a coiler, the 1J22 coated steel strip is coiled into an SD shape, and two ends of the 1J22 steel strip are respectively welded with the coiled iron core body, so that a first semi-finished SD-type 1J22 magnetic iron core is obtained.
And 4, step 4: and performing magnetic property treatment on the first semi-finished SD type 1J22 magnetic iron core to obtain a second semi-finished SD type 1J22 magnetic iron core.
Specifically, the magnetic performance of a first semi-finished product SD type 1J22 magnetic iron core is processed by an atmosphere furnace in a hydrogen atmosphere with the purity of 99.999% at the temperature of 800-900 ℃, and after heat preservation is carried out for 3-6 hours, the second semi-finished product SD type 1J22 magnetic iron core is obtained by cooling.
Because residual stress exists in the finished product SD type 1J22 magnetic iron core in the winding process, the residual stress can cause the magnetic performance of the subsequent finished product SD type 1J22 magnetic iron core to be reduced, therefore, the residual stress needs to be removed and the magnetic performance needs to be restored, and because the 1J22 material is sensitive to impurities and is easy to oxidize, strong reducing gas, namely hydrogen is selected for heat treatment, the obtained finished product SD type 1J22 magnetic iron core has higher electromagnetic performance parameters, and the alternating current magnetic performance of the product can meet the performance requirements.
Meanwhile, after the first semi-finished SD type 1J22 magnetic iron core is subjected to long-time high-temperature treatment, the insulating property is good, the adhesive force of the coating layer on the 1J22 steel strip is further enhanced, the processing property is good, and the subsequent processing is facilitated.
Further, when the SD type 1J22 magnetic iron core is cooled to 300 ℃, the magnetic iron core is pulled out of a heating area of an atmosphere furnace chamber for cooling, and an industrial fan is used for assisting in cooling, so that the problem of temperature reduction delay is solved.
It should be noted that the industrial fan may be selected according to the needs, and the embodiment of the present invention is not limited in detail herein.
And 5: and (3) bonding the second semi-finished product SD type 1J22 magnetic iron core by using the impregnating compound to obtain a third semi-finished product SD type 1J22 magnetic iron core.
The impregnating material is a two-component epoxy resin impregnating material and is mainly prepared from modified epoxy resin and a curing agent according to the proportion of 3:1, wherein the curing agent is an amine curing agent.
Specifically, the modified epoxy resin can be any one of glycidyl esters and glycidyl amines, and the curing agent is an aromatic amine curing agent in amine curing agents, specifically, an amine D-113 aromatic amine curing agent of Hunter, Suzhou can be selected.
Utilize the vacuum impregnation pot to carry out the flooding bonding to second semi-manufactured goods SD type 1J22 magnetic core, and dry with the oven, thereby make bonding together between the layer of iron core, because 1J22 magnetic core flooding bonding also can cause certain iron loss to the product, as shown in table 2 and table 3, through the contrast test to different flooding material, two ingredient epoxy flooding materials have been confirmed, this two ingredient epoxy flooding materials are less to 1J22 magnetic core performance influence, it is firm reliable to bond, be difficult for the layering, and do not need secondary flooding after the follow-up cutting of iron core, the cost of production has effectively been reduced.
Table 2: 5151 epoxy resin
| Numbering | P (W/kg) after heat treatment | P (W/kg) after impregnation | Mean increase in loss |
| 1# | 47.5W/kg | 72.6W/kg | +52.8％ |
| 2# | 58.6W/kg | 87.8W/kg | +49.8％ |
| 3# | 52.1W/kg | 89.9W/kg | +72.6％ |
| 4# | 45.8W/kg | 83.4W/kg | +82.2％ |
Table 3: two-component epoxy resin in the embodiment of the invention
| Numbering | P (W/kg) after heat treatment | P (W/kg) after impregnation | Mean increase in loss |
| 1# | 48.1W/kg | 52.6W/kg | +9.4％ |
| 2# | 58.6W/kg | 64W/kg | +9.2％ |
| 3# | 38.1W/kg | 40.2W/kg | +5.5％ |
| 4# | 45.8W/kg | 48W/kg | +4.8％ |
In tables 2 and 3, the iron loss P (W/kg) represents an iron loss value test value at a frequency of 400Hz and a magnetic induction intensity value of 2.0T.
Step 6: and cutting the third semi-finished product 1J22 magnetic core, and checking the size of the cut magnetic core to obtain a finished product SD type 1J22 magnetic core, wherein the structural diagram of the SD type 1J22 magnetic core is shown in FIG. 3.
Further, step 6 specifically includes the following steps:
step 61: and (5) carrying out centering slitting on the third semi-finished product SD type 1J22 magnetic iron core.
Because the 1J22 material is sensitive to stress, the third semi-finished product SD type 1J22 magnetic iron core is subjected to centering and splitting by adopting a linear cutting machine, so that the residual stress of the material is reduced, and meanwhile, the assembly of the coil on the iron core is facilitated.
Step 62: and grinding the cut surface of the cut third semi-finished product SD type 1J22 magnetic iron core.
The end surface of the iron core, namely the cutting surface, is required to be smooth, the roughness is less than or equal to 1.6 mu m, and the grinding machine is adopted to grind the cutting surface of the iron core, so that the roughness requirement can be met.
And step 63: and slightly grinding the ground cutting surface, and then carrying out size correction and peeling inspection on the third semi-finished product SD type 1J22 magnetic iron core to obtain the finished product SD type 1J22 magnetic iron core.
In order to reduce the interlayer conduction phenomenon after the end face grinding, 400-mesh fine sand paper is adopted to slightly grind the end face of the iron core, so that the influence of the interlayer conduction of the end face on the performance of the iron core is eliminated.
After the sand paper is used for grinding, the size of the stripped iron core is corrected by adopting a file and sharp-nose pliers to enable the stripped iron core to meet the technical requirements, and then the qualification of the SD type 1J22 magnetic iron core is checked by adopting a three-phase digital electrical parameter measuring instrument according to the technical requirements of the product to ensure the qualification of the final product.
The finished SD type 1J22 magnetic core was subjected to a number of magnetic property tests after finishing the process, and the ac magnetic properties are shown in table 4:
table 4: alternating current magnetic property of 1J22 magnetic iron core of the embodiment of the invention
The iron losses P1.5/400, P1.7/400, P1.9/400, P2.0/400, and P2.1/400 are iron loss values at 400Hz of the magnetic induction intensity values of 1.5T, 1.7T, 1.9T, 2.0T, and 2.1T, respectively, and the smaller the iron loss value, the better.
Example 3
The embodiment of the present invention takes 1J22 steel strip as an example, and provides a method for manufacturing a CD-type 1J22 magnetic iron core, the specific process of which is the same as the process for manufacturing an SD-type 1J22 magnetic iron core, and the detailed description of the embodiment of the present invention is not repeated herein, and please refer to fig. 4 for the structure diagram of the obtained CD-type 1J22 magnetic iron core.
The 1J22 steel belt adopted by the 1J22 magnetic iron core has very high saturation magnetic induction intensity, and is lighter and smaller than the traditional silicon steel iron core, so that the volume and the weight of aerospace products using the iron core are saved, and the energy consumption required by aircrafts is also reduced.
The thickness of the coating layer on the surface of the 1J22 steel strip can be adjusted through the gap between the two rollers, so that the product is guaranteed to have good insulating property and effective magnetic conduction area;
the coating layer of the 1J22 magnetic iron core has strong adhesive force, and the 1J22 magnetic iron core is ensured to have reliable insulating property;
the 1J22 magnetic iron core has higher electromagnetic performance parameters, thereby ensuring that each alternating current magnetic performance of the product meets the performance requirement of the product;
the manufacturing system of the magnetic iron core improves the production efficiency of the 1J22 magnetic iron core.
In the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (3)
1. A method for manufacturing a magnetic iron core is characterized by comprising the following steps:
step 1: taking a steel strip with required length and width, carrying out deburring treatment and degreasing treatment on the steel strip, rinsing and drying to obtain the steel strip to be coated; the steel strip comprises the following chemical components in percentage by weight: c: less than or equal to 0.04; mn: less than or equal to 0.30; si: less than or equal to 0.30; p: less than or equal to 0.020; s: less than or equal to 0.020; ni: less than or equal to 0.50; cu: less than or equal to 0.20; co: 49.0-51.0; v: 0.80 to 1.80; the balance of Fe;
step 2: preparing a coating material, coating the steel strip to be coated and drying to obtain a coated steel strip; the coating material is water-soluble inorganic insulating paint; the thickness of the coating layer is 0.005 mm-0.01 mm;
and step 3: rolling and forming the coated steel strip, and fixing two ends of the rolled and formed coated steel strip to obtain a first semi-finished magnetic iron core;
and 4, step 4: performing magnetic property treatment on the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core; performing magnetic property treatment on the first semi-finished magnetic iron core in a hydrogen atmosphere with the purity of 99.999% at the temperature of 800-900 ℃, preserving heat for 3-6 h, and cooling to obtain a second semi-finished iron core;
and 5: bonding the second semi-finished magnetic iron core by using an impregnating material to obtain a third semi-finished magnetic iron core; the impregnating compound is a two-component epoxy resin, and the two-component epoxy resin is prepared from a modified epoxy resin and a curing agent according to a ratio of 3: 1; the modified epoxy resin is any one of glycidyl esters and glycidyl amines; the curing agent is an amine curing agent;
step 6: and cutting the third semi-finished magnetic iron core, and correcting and peeling the size of the third semi-finished magnetic iron core to obtain a finished magnetic iron core.
2. The method of making a magnetic core as claimed in claim 1, wherein said step 6 comprises:
step 61: performing centering slitting on the third semi-finished magnetic iron core by using a linear cutting machine;
step 62: grinding the cut surface of the cut third semi-finished magnetic iron core by using a grinding machine;
and step 63: and grinding the ground cutting surface by using fine sand paper, and then correcting and peeling the size of the third semi-finished magnetic iron core to obtain the finished magnetic iron core.
3. A system for manufacturing a magnetic iron core according to any one of claims 1 to 2, comprising:
the blanking device is used for cutting the steel strip raw material to obtain a steel strip to be coated of the steel strip with the required length and width;
the coating device is used for coating and drying the steel strip to be coated to obtain a coated steel strip;
the coating apparatus includes: the device comprises a feeding mechanism, a coating mechanism, a drying mechanism and a material receiving mechanism; wherein,
the feeding mechanism is used for collecting the steel strip to be coated and supplying the steel strip to be coated to the coating mechanism;
the coating mechanism comprises two rollers and a coating pool, wherein a coating material is filled in the coating pool, the steel strip to be coated is clamped between the two rollers, and continuous coating is carried out through continuous rotation of the rollers; the two rollers are rubber rollers;
the drying mechanism is used for drying the coated steel strip to obtain a coated steel strip;
the receiving mechanism is used for collecting the coated steel strip;
the iron core rolling device is used for rolling and molding the coated steel strip to obtain a first semi-finished magnetic iron core;
the magnetic property processing device is used for carrying out magnetic property processing on the first semi-finished magnetic iron core to obtain a second semi-finished magnetic iron core;
the dipping and bonding device is used for carrying out dipping and bonding on the second semi-finished magnetic iron core to obtain a third semi-finished magnetic iron core;
and the cutting checking device is used for cutting the third semi-finished magnetic iron core and checking the size of the third semi-finished magnetic iron core to obtain a finished magnetic iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911292140.XA CN110993306B (en) | 2019-12-16 | 2019-12-16 | Preparation method and preparation system of magnetic iron core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911292140.XA CN110993306B (en) | 2019-12-16 | 2019-12-16 | Preparation method and preparation system of magnetic iron core |
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| CN102254674A (en) * | 2010-05-18 | 2011-11-23 | 零八一电子集团四川力源电子有限公司 | Amorphous soft magnetic alloy magnetic core winding machine |
| CN102409336A (en) * | 2011-12-04 | 2012-04-11 | 西北有色金属研究院 | Continuous preparation device and preparation method for bismuth-series high temperature superconductive thick film |
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